One rainy night, Wada, a young teenage boy, standing near the edge of a bridge over a raging river - is on a depressing brink towards committing suicide. Suddenly, a beautiful blonde foreign girl, named Lisa, mysteriously appears. Who is this cheerful girl? And why is she dressed as a cheerleader? Wada wasn't interested and tries to ignore her, but Lisa kicks him off the bridge, and says "try flying." And to his surprise, he does. This power, where did it come from?

It seems that there is a war between the gods and demons. And by fate, the result of this war is tied to Wada. Upon learning this, Wada does not look very pleased. Was this his purpose - his destiny? What will he choose? Does he even have a choice? Afterall, Lisa, the goddess cheering him on, is surprisingly his classmate.

From HMR:

The main character, Rui, is a hardworking and happy girl. One day, her neighbor moves away and leaves behind a stuffed panda bear. Rui decided to take it home, since she's always loved panda bears. She goes to sleep with it one night, and discovers herself in bed with a stranger (who also happens to look like her ideal man) the next morning. He introduces himself as Peter, and that is how she ends up meeting three other guys...

Iroha, a masculine girl, and Hifumi, a feminine boy, are siblings who have transferred to a different middle school and moved to their grandparents house. However, after the first night, much to their surprise... they've switched genders. The two are left feeling "delighted"...

Danjou Yamato is a high-school student who lives in the countryside and is the boxing champion of the region. However, when his family has to move out to live in Tokyo, he is transfered to a school in Tokyo that was previously an all-girls school. Girls have a lot of power and give the guys a hard time. But Yamato will not bow down to the power of the girls, and on his way to claim power for the guys in the school, he finds out something about his past... something that he had forgotten long ago...

Weak, bullied, and pessimistic about life, that's Setsuna Kashiwagi. On the verge of jumping off a bridge, a mysterious man appears behind him and offers the contract "10 million yen in exchange for your life in a year." Skeptical at first, he accepts. Waking up the next morning, thinking it was just a dream, he notices 2 beautiful women sitting beside him. They are Kanna and Rena, Oni princesses here to claim his heart in a year.

Sequel of Beach Stars, the story begins where it stopped in the first one.
Nanase, who's now the representative of her prefecture, has finally joined the Madonna Cup and will do everything in her power to defeat her one and only target: Hayakawa Sanae!

STYLISH ACTION FROM THE AUTHOR OF ARCHLORD! The new English teacher, Chun-Woo, is not your ordinary teacher. Shioon, a victim of constant bullying, unexpectedly witnesses Chun-Woo's fighting power, and begs him to make him his disciple. Chun-Woo claims he can teach Shioon only if he is truly determined, and Shioon must jump off a bridge into a deep river in order to prove it! It turns out, however, that Chun-Woo and his powers are more than meets the eye. Shioon makes a grand entrance into the hidden world of martial arts, and he is about to be taught by the best there is! You can read part 2: The Breaker - New Waves here.

Manhwa you may like:
+ The Gamer - ​THE 게이머
+ Gosu 고수
+ Yongbi The Invincible 용비불패

Transfer student Manabizaki Kyou is a swot, a person who spends too much time studying. His dream is to attend Tokyo University and then work for NASA! He will soon discover, however, that the high school he's transferred into, which was once very prestigious, has taken in delinquents from the surrounding schools. Now it is full of violence and gang fights.
Luckily, Manabizaki has a surprising skill at fighting, particularly when he's defending the peace of his study area. Through this strength he'll find his new friends, a weak boy called Iwashida and a legendary delinquent girl, Hasuno Nene, who makes him feel things that, for the first time in his life, he can't explain...

A spin-off story focuses Kazuma Ikezawa (King Kazuma), Natsuki Shinohara's cousin, as he battles his way in the Oz Martial Art Competition.

The heroine of the story, Amu Hinamori, is a student at Seiyo Elementary. At first glance, her classmates refer to her as "cool and spicy" and rumors speculate about her personal life. However, her real personality is that of a very shy girl who has trouble showing her true personality. One night, Amu wishes for the courage to show her "would-be" self, and the next morning finds three brightly colored eggs—red, blue, and green—in her bed. At first, she is alarmed, but realizes she must have really wished to change. These eggs hatch into three Guardian Characters: Ran, Miki, and Su. The Guardian Characters aid Amu in discovering who she truly is and help fulfill Amu's dreams. Amu's life becomes much more complex as she struggles to deal with her "would-be" selves and the Seiyo Elementary's Guardians, who recruit Amu as the Joker to search for X Eggs and X Characters, the corrupted forms of peoples' dreams. Meanwhile, the Easter Company is extracting people's eggs in search of a special egg called the Embryo. The Embryo is believed to grant any wish to the one who possesses it. However, the process creates X Eggs and X Characters. Continues on "Shugo Chara! Encore!"

Mashiro was always alone, whether at high school, cram school, and home. Until one day, Mashiro met a youngster with a strange atmosphere. Holding the thought of “I want to change”, she took a big first step forward--even though her legs are small--seeking the path of Eden.

From FairGame:

"Live with Sincerity" is Natsuki Taiyou's motto. It's the first day of high school, Taiyou was heading to school and then he meets Hinata during the way there. He fell in love at first sight and suddenly confessed to her. Her answer was yes but then she ran away without saying who she was, but it turns out that she was his classmate. Taiyou felt a destiny between them. However, on the next day, she doesn't remember who he is. Why could that be...?

Contains 4 fantasy stories (2 plausibly tying into the main story), 1 story taking place after Harima announces he's a mangaka, and 5 stories occurring after the final chapter (with 2 being a part of the possible future)

In a modern country where the government is controlled by a Martial Shogun and samurai receive much respect, there lives fraternal twins of the Sakakido family. Kou, the brother, is very feminine, excels at cooking, cleaning, arts and crafts. Tsukiko, the sister, is masculine, loves fighting and is a combat genius. The twins learn about the Samurai High School, where men test their strength and women test their femininity, but the only way they can attend is by swapping places. If they are to be found cheating, they will be exiled so they have to overcome their gender differences and maintain their secret.

From Shoujomagic: Haruka is a sweet, innocent high school girl who is very excited to meet her new step-brother, Tsukasa. Since her father works overseas, Haruka has been living alone, but now that her father has remarried, she'll have little grade schooler Tsukasa with her while both their parents are out of the country. When they finally meet, Tsukasa is even cuter than Haruka had hoped! He wants to get her help with his homework and sleep in her bed...and undress her and make love to her!?

「 Don't Interfere with My Life!! 」

Handsome face and all around sportsman, also the young master of an enormous rich family...Chung-sol High school's No. 1 Han Sang-Ah!! This young master who doesn't lack anything ventures running away from home?! Officially permitted runaway time is 3 years! During this time there is something he says he must get in his hands...!! From then on starting to confront him are woman!! woman!! women!!!

Harem Flood Mixed with Comedy and Action! Explosion of Heart Fluttering Pink that would tail all Korea's Bookstores!!

(Source: volume one's backcover)

Watanuki Kimihiro is a high school student plagued by yokai and ayakashi – spirits with a strong attraction to him. The spirits are invisible to others and encounters with them are extremely troublesome. When he stumbles into a shop that grants wishes, however, events in his life promise to become more unusual. The shop is owned by Yuuko Ichihara – a mysterious and beautiful (sometimes playful) witch of many names and esoteric renown. For a price, she offers to grant Watanuki's wish to be rid of the spirits. The price, according to Yuuko, must be of equal value and so, as payment, he temporarily becomes Yuuko's part-time employee – a maid to be precise! Watanuki's job also seems to consist of small errands dealing with the supernatural including the household chores. His love interest Himawari Kunogi, and "rival" Doumeki Shizuka, occasionally join him in his work as per Yuuko's request. The three become increasingly close despite Watanuki's annoyance with Doumeki. Yuuko constantly refers to "hitsuzen", meaning inevitability, destiny, or fate, as being the driving force in the world. She states that there is no such thing as coincidence, and that every single action and decision is inevitable, because without them, other related events in the future could not happen.

From JShoujo Scans:

Although she doesn't get along with people very well, Kanoko considers herself a perfect "observer". Her hobby is observing the students in her third year junior high class and keeping a journal of the classroom drama. But what will happen when Kanoko becomes involved with some of her classmates?

Kaname Okiura, a student of Prefectoral Umineko Shougyou High ("Umisho" for short), joined the school's swimming club in order to learn how to swim, but the club is filled with weirdos, let alone teaches him swimming. Then, a sunny, happy-go-lucky girl named Amuro Ninagawa who was transferred from Okinawa joined the club. Her extraordinary underwater speed and unorthodox swimming style (plus her personal habit of nude swimming—a powerful magnet to teenage boys) surprised every club member, especially Okiura, because she reminds him of a mermaid-like creature he saw only once in his early childhood.

Remake of the original Transfer Student Storm Bringer series, by the same author.

This time Ju Ingong is no longer a lucky wimp with a front of being strong. Instead Ju Ingong is now a famous fighter renowned for becoming Jjang of a school and transferring to another to crush it which earned him the title of 'Transfer Student Storm Bringer' Ju Ingong now has his sights on a new school!